You have 10 cups of a cleaning solution that is 10% white vinegar and 90% water. You want the mixture to be 50% white vinegar and 50% water. How many cups of white vinegar do you need to add to the mixture?
Let x-->volume of white vinegar you need to add to the mixture (measured in cups) then the amount of the pure vinegar in the mixture will be -----> (10*0.1 + x) cups the volume of liquid will be ---------> 10 + x the concentration equation is-------> [(10*0.1 + x)/(10+x)]=0.50multiply both sides by (10+x) and then simplify
